Great Plains 7552 Series VII Operator Manual - Manual (Page 23)

Great Plains Mfg., Inc. Table of Contents ►
Section 1: Assembly
3/31/2004 Series VII 6326-7552 Discovator 550-221M
19
Center Gang & Gang Hanger Assembly
At this time it is best to hang the center
gangs and gang hanger tubes before you install
the hitch and hitch strut assembly, Figure 6.
U-bolt the center right and left gang
hanger tubes (1) & (2) to the center brace bar
with 5/8 x 3 x 5½ u-bolts (3), with lock washers
and hex nuts. Line up the levers on the hanger
tubes with the ratchet jack/cylinder mounts on
the brace bar. Pin the preassembled center
gangs (4) & (5) to the gang hanger tubes (1) &
(2) with the 1 x 5½ pins (6). Secure with 3/8 x
2 clevis pins & 1/8 x 1 cotters. Slide the
spring washer (8) & spring (9) on to the gang
spring bolt (7) as shown and slide it up into the
cast swivel on the gang hanger tubes. Place a
1” flat washer on the spring bolt and thread the
1” hex nut and 1” jam nut onto the spring bolt
(7). Pin the other end to the gang with ¾ x 2½
clevis pins (10), secure with 1/8 x 1½ cotters.
Finally tighten down the nuts on the spring bolt
until the spring has a preload length of 8 3/4”.
Figure 6